如何使用 UIimageview 和第三个 uiimage 缩放 UIScrollView 作为覆盖在顶部的固定宽度和宽度高度

发布于 2024-12-20 12:00:09 字数 1339 浏览 0 评论 0原文

我有一个 UIscrollview ，其子视图是 UIimageView ，当我缩放滚动视图时，一切正常。像这样：

mapImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"map.png"]];
mapScrollView.contentSize = mapImageView.frame.size;
[mapScrollView addSubview:mapImageView];
mapScrollView.minimumZoomScale = mapScrollView.frame.size.width / mapImageView.frame.size.width;
mapScrollView.maximumZoomScale = 4;
[mapScrollView setZoomScale:mapScrollView.minimumZoomScale];

我将另一个 UIimageview 作为子视图添加到 uiviewimage 的某个位置，如下所示：

userImageView1 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"bubble.png"]];
userImageView1.frame = CGRectMake( 300  * 4, 300 * 4, 104 * 4 , 135 * 4  ); 
[mapImageView addSubview:userImageView1];   
[userImageView1 release];

现在，当我缩放时，气泡在地图上移动。在委托函数中，我这样做：

(void)scrollViewDidZoom:(UIScrollView *)_scrollView{
    CGRect frame = userImageView1.frame;
    frame.origin.x = ??
    frame.origin.y = ??
    frame.size.width = 104 /2/_scrollView.zoomScale; 
    frame.size.height = 135 /2/_scrollView.zoomScale;
    userImageView1.frame = frame;   
}

为了设置固定宽度和宽度。

我的问题是 X 和高度需要是什么。 Y 以便将图像移动到缩放屏幕中的相关位置。我如何计算那些 X,Y

10x

Tamir

原文

i have i UIscrollview with a subview wich is UIimageView and when i zoom the scroll view every thing work fine.
like this:

mapImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"map.png"]];
mapScrollView.contentSize = mapImageView.frame.size;
[mapScrollView addSubview:mapImageView];
mapScrollView.minimumZoomScale = mapScrollView.frame.size.width / mapImageView.frame.size.width;
mapScrollView.maximumZoomScale = 4;
[mapScrollView setZoomScale:mapScrollView.minimumZoomScale];

i add another UIimageview as subview to the uiviewimage in a position, like this:

userImageView1 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"bubble.png"]];
userImageView1.frame = CGRectMake( 300  * 4, 300 * 4, 104 * 4 , 135 * 4  ); 
[mapImageView addSubview:userImageView1];   
[userImageView1 release];

now the bubble moves on the map as i zoom.
in the delegate function i do this:

(void)scrollViewDidZoom:(UIScrollView *)_scrollView{
    CGRect frame = userImageView1.frame;
    frame.origin.x = ??
    frame.origin.y = ??
    frame.size.width = 104 /2/_scrollView.zoomScale; 
    frame.size.height = 135 /2/_scrollView.zoomScale;
    userImageView1.frame = frame;   
}

in order to set fixed width & height.

my question is whats needs to be the X & Y in order to move the image to the relevant position in the zoomed screen.
how do i calculate those X,Y

10x

Tamir

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